CREODONTA. 321 



M. 



Width of bead of astragalus 016 



Depth of head of astragalus (greatest) 009 



Leugth of calcaneum externally 045 



Length of fore part of calcaneum 018 



Width of lore part at sustentaculum 021 



Width of cuboid facet of sustentaculum 013 



Depth of cuboid facet of sasteutaculnm 0008 



Length of cuboid bone (greatest) 016 



Leugth between calcaneal and metatarsal faces of cuboid on external side 007 



Diameters astragalar face of cuboid ^■"'*'^™P°''t«"'"^ 010 



( transverse 0055 



Diameters metatarsal face of cuboid \ anteroposterior 0095 



( transverse 0105 



_. ^ „ . , < auteroposterior 013 



Diameters of navicular < '^ 



t transverse 017 



t longitudinal 030 



Diameters metatarsus i ' < fore and aft 013' 



i proximal ; 



^ (transverse 0105 



( longitudinal 040 



Diameters metatarsus ii < ,< fore and aft 012 



i proximal } 



^ ( transverse 007 



i longitudinal 044 



Diameters metatarsus iii ^ . ,< fore and aft 012 



f proximal > 



^ < transverse 007 



Diameters metatarsus ivproxiinallv < '"''^ '"'"' ^ ~ 



(transverse .. .009 



Diameters metatarsus V proximally \ fore and aft 010 



( transverse 012 



( longitudinal 013 



Diameters ungual phalange < , vertical 006 



/ proximal ) 



• ^ (transverse 006 



Remarks. — From the above measurements, which are confirmed by 

 more than one other skeleton, it can be seen that there is in this species a 

 remarkable disproportion between the size of the skull and that of the limbs. 

 While the dimensions of the jaws are like those of the jaguar, those of the 

 limbs do not exceed those of the cheetah; while the digits are not only 

 much shorter, as those of a plantigrade animal, but are more slender. The 

 ungual phalange preserved shows that the claws had no prehensile power, 

 and were not effective as weapons or for digging. This is a further indica- 

 tion that the species of Oxi/cena were aquatic in their habits. 



PROTOPSALIS Cope. 



American Naturalist, 1880, p. 745; Bulletin U. S. Geol. Surv. Terrs., vi, 1881, p. 193. 



Inferior molars: one like those of Oxyoena, i. e., with large heel and 



internal cusp; another, probably the last, larger, without internal tubercle, 



and with a rudimental heel, thus resembling the inferior sectxjrial of various 



existing Carnivora. A median dorsal vertebra distinctly opisthocoelous. 

 21 c 



